diff --git a/ns3 b/ns3
index 124b13e8c..90121cc49 100755
--- a/ns3
+++ b/ns3
@@ -1085,6 +1085,7 @@ def get_program_shortcuts(build_profile, ns3_version):
 
 
 def parse_version(version_str):
+    version_str = version_str.split("-")[0]
     version = version_str.split(".")
     version = tuple(map(int, version))
     return version